main

// Project6.2.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "Project6.2.h"

#define MAX_LOADSTRING 100

// Global Variables:
HINSTANCE hInst;								// current instance
TCHAR szTitle[MAX_LOADSTRING];					// The title bar text
TCHAR szWindowClass[MAX_LOADSTRING];			// the main window class name
//image size in pixels and array setup
const unsigned ImageHeight = 600;
const unsigned ImageWidth = 800;
int Image[ImageWidth][ImageHeight];
double ImageScalar = 1.0;							// NEW: GLOBAL VARIABLE USED TO SCALE STUFF

// Forward declarations of functions included in this code module:
ATOM				MyRegisterClass(HINSTANCE hInstance);
BOOL				InitInstance(HINSTANCE, int);
LRESULT CALLBACK	WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK	About(HWND, UINT, WPARAM, LPARAM);

////////////// FUNCTION DEFINITION FOR ARRAY GENERATION
void Mandelbrot(double iMinRe,double iMaxRe,double iMinIm)						/// ADD: Three input parameters, initial build will call the default values from the 
{
	//// DEFAULTS
	/// MinRe=-2.0  MaxRe=1.0 MinIm = -1.2 MaxIm=MinIm + (MaxRe - MinRe)*ImageHeight / ImageWidth
	double MinRe = iMinRe;								// }
	double MaxRe = iMaxRe;								// } Tie the used variables to the input paramenters
	double MinIm = iMinIm;								// }
	double MaxIm = MinIm + (MaxRe - MinRe)*ImageHeight / ImageWidth;
	// SCALAR MODIFICATION ZONE
	MinRe = MinRe*ImageScalar;
	MaxRe = MaxRe*ImageScalar;
	MinIm = MinIm*ImageScalar;
	MaxIm = MaxIm*ImageScalar;
	// SCALAR MODIFICATION ZONE
	double Re_factor = (MaxRe - MinRe) / (ImageWidth - 1);
	double Im_factor = (MaxIm - MinIm) / (ImageHeight - 1);
	unsigned MaxIterations = 4096;
	for (unsigned y = 0; y<ImageHeight; ++y)
	{
		double c_im = MaxIm - y*Im_factor;
		for (unsigned x = 0; x<ImageWidth; ++x)
		{
			double c_re = MinRe + x*Re_factor;
			double Z_re = c_re, Z_im = c_im;
			bool isInside = true;
			int niterations = 0;
			for (unsigned n = 0; n<MaxIterations; ++n)
			{
				double Z_re2 = Z_re*Z_re, Z_im2 = Z_im*Z_im;
				if (Z_re2 + Z_im2 > 4)
				{
					isInside = false;
					niterations = n;
					break;
				}
				Z_im = 2 * Z_re*Z_im + c_im;
				Z_re = Z_re2 - Z_im2 + c_re;
			}
			Image[x][y] = niterations;
		};
	}
}
////////////// FUNCTION DEFINITION FOR ARRAY GENERATION

int APIENTRY _tWinMain(_In_ HINSTANCE hInstance,
                     _In_opt_ HINSTANCE hPrevInstance,
                     _In_ LPTSTR    lpCmdLine,
                     _In_ int       nCmdShow)
{
	UNREFERENCED_PARAMETER(hPrevInstance);
	UNREFERENCED_PARAMETER(lpCmdLine);

 	// TODO: Place code here.
	MSG msg;
	HACCEL hAccelTable;

	// Initialize global strings
	LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
	LoadString(hInstance, IDC_PROJECT62, szWindowClass, MAX_LOADSTRING);
	MyRegisterClass(hInstance);

	// Perform application initialization:
	if (!InitInstance (hInstance, nCmdShow))
	{
		return FALSE;
	}

	hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_PROJECT62));

	// Main message loop:
	while (GetMessage(&msg, NULL, 0, 0))
	{
		if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
	}

	return (int) msg.wParam;
}



//
//  FUNCTION: MyRegisterClass()
//
//  PURPOSE: Registers the window class.
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
	WNDCLASSEX wcex;

	wcex.cbSize = sizeof(WNDCLASSEX);

	wcex.style			= CS_HREDRAW | CS_VREDRAW;
	wcex.lpfnWndProc	= WndProc;
	wcex.cbClsExtra		= 0;
	wcex.cbWndExtra		= 0;
	wcex.hInstance		= hInstance;
	wcex.hIcon			= LoadIcon(hInstance, MAKEINTRESOURCE(IDI_PROJECT62));
	wcex.hCursor		= LoadCursor(NULL, IDC_ARROW);
	wcex.hbrBackground	= (HBRUSH)(COLOR_WINDOW+1);
	wcex.lpszMenuName	= MAKEINTRESOURCE(IDC_PROJECT62);
	wcex.lpszClassName	= szWindowClass;
	wcex.hIconSm		= LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));

	return RegisterClassEx(&wcex);
}

//
//   FUNCTION: InitInstance(HINSTANCE, int)
//
//   PURPOSE: Saves instance handle and creates main window
//
//   COMMENTS:
//
//        In this function, we save the instance handle in a global variable and
//        create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   HWND hWnd;

   hInst = hInstance; // Store instance handle in our global variable

   hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
      CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);

   if (!hWnd)
   {
      return FALSE;
   }

   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);

   return TRUE;
}

//
//  FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM)
//
//  PURPOSE:  Processes messages for the main window.
//
//  WM_COMMAND	- process the application menu
//  WM_PAINT	- Paint the main window
//  WM_DESTROY	- post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	int wmId, wmEvent;
	PAINTSTRUCT ps;
	HDC hdc;

	switch (message)
	{
	case WM_COMMAND:
		wmId    = LOWORD(wParam);
		wmEvent = HIWORD(wParam);
		// Parse the menu selections:
		switch (wmId)
		{
		case IDM_ABOUT:
			DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
			break;
		case IDM_EXIT:
			DestroyWindow(hWnd);
			break;
		default:
			return DefWindowProc(hWnd, message, wParam, lParam);
		}
		break;
	case WM_PAINT:
		//////////////////////////////////////////////////// NEW CODE GOES HERE
		//ImageScalar = 0.5;
		Mandelbrot(-2.0,1,-1.2);					// call the array build function with the original default values
		// Compute data for image pixel color array
			hdc = BeginPaint(hWnd, &ps);
		// now Paint the computed image in thenWindow
		for(unsigned y = 0; y<ImageHeight; ++y)
		{
			for(unsigned x = 0; x<ImageWidth; ++x)
			{
				int color = Image[x][y];
				//color each pixel using a pseudocolor based on the number of iterations
				SetPixel(hdc, x, y, RGB((color & 0xF) * 16,
				((color >> 4) & 0xF) * 16, ((color >> 8) & 0x0F) * 16));
			}
		}
		EndPaint(hWnd, &ps); //EndPaint(hWnd, &ps);
		break;
		//// ORIGINAL
		/*
		hdc = BeginPaint(hWnd, &ps);
		// TODO: Add any drawing code here...
		EndPaint(hWnd, &ps);
		break;
		*/
		/////////////////////////////////////////////////////
	case WM_DESTROY:
		PostQuitMessage(0);
		break;

		//////////////////////////////////////////////////// ZOOM CASE BELOW
		//
	case WM_LBUTTONDOWN:

		ImageScalar = ImageScalar*0.7;
		Mandelbrot(-2.0, 1, -1.2);					// call the array build function with the original default values
		// Compute data for image pixel color array
		hdc=GetDC(hWnd);
		// now Paint the computed image in thenWindow
		for (unsigned y = 0; y<ImageHeight; ++y)
		{
			for (unsigned x = 0; x<ImageWidth; ++x)
			{
				int color = Image[x][y];
				//color each pixel using a pseudocolor based on the number of iterations
				SetPixel(hdc, x, y, RGB((color & 0xF) * 16,
					((color >> 4) & 0xF) * 16, ((color >> 8) & 0x0F) * 16));
			}
		}
		ReleaseDC(hWnd, hdc);
		break;

		//
		//////////////////////////////////////////////////// ZOOM CASE BELOW
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
	return 0;
}

// Message handler for about box.
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	UNREFERENCED_PARAMETER(lParam);
	switch (message)
	{
	case WM_INITDIALOG:
		return (INT_PTR)TRUE;

	case WM_COMMAND:
		if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
		{
			EndDialog(hDlg, LOWORD(wParam));
			return (INT_PTR)TRUE;
		}
		break;
	}
	return (INT_PTR)FALSE;
}